param: use strdup() on input strings uniformly
threading: copyright comment format nits

be consistent with our other files
threading: don't use this->

We don't do this anywhere else
analysis: drop MATCH_NON_PMODE macro

this was a debugging feature, it's not being tested which means it will get
broken and so it's best just to keep the code clean
frameencoder: white-space nits
api: fix range limit docs for RQT limit params